CVE-2009-5010

Description

Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.1 allows remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected return value of None, a different vulnerability than CVE-2010-3494.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 1.04% Top 25%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2010/09/11/2 mailing list
http://code.google.com/p/pyftpdlib/issues/detail?id=91
http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
https://bugs.launchpad.net/zodb/+bug/135108
http://code.google.com/p/pyftpdlib/source/detail?r=439
http://www.openwall.com/lists/oss-security/2010/09/24/3 mailing list
http://www.openwall.com/lists/oss-security/2010/09/22/3 mailing list
http://bugs.python.org/issue6706 patch
http://www.openwall.com/lists/oss-security/2010/09/09/6 mailing list
http://code.google.com/p/pyftpdlib/source/diff?spec=svn439&r=439&format=side&path=/trunk/pyftpdlib/ftpserver.py

Frequently Asked Questions

What is the severity of CVE-2009-5010?
CVE-2009-5010 has been scored as a medium severity vulnerability.
How to fix CVE-2009-5010?
To fix CVE-2009-5010, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-5010 being actively exploited in the wild?
It is possible that CVE-2009-5010 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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